summaryrefslogtreecommitdiff
path: root/drivers/input/mouse
diff options
context:
space:
mode:
authorHenrik Rydberg <rydberg@bitmath.org>2015-02-01 11:25:14 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2015-02-01 11:50:35 -0800
commit448c7f3830ca283e485aa943279acea6bde8b270 (patch)
tree9e5b1ce72aa87035bc73595d2ce925bacec6a155 /drivers/input/mouse
parent60bcaae15e0bd7f24d004ef2c9b3c8acb34b688d (diff)
Input: MT - add support for balanced slot assignment
Some devices are not fast enough to differentiate between a fast-moving contact and a new contact. This problem cannot be fully resolved because information is truly missing, but it is possible to safe-guard against obvious mistakes by restricting movement with a maximum displacement. The new problem formulation for dmax > 0 cannot benefit from the speedup for positive definite matrices, but since the convergence is faster, the result is about the same. For a handful of contacts, the latency difference is truly negligible. Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Tested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Henrik Rydberg <rydberg@bitmath.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/mouse')
-rw-r--r--drivers/input/mouse/alps.c2
-rw-r--r--drivers/input/mouse/bcm5974.c2
-rw-r--r--drivers/input/mouse/cypress_ps2.c2
-rw-r--r--drivers/input/mouse/synaptics.c2
4 files changed, 4 insertions, 4 deletions
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index f719f28d370c..f205b8be2ce4 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -435,7 +435,7 @@ static void alps_report_mt_data(struct psmouse *psmouse, int n)
struct alps_fields *f = &priv->f;
int i, slot[MAX_TOUCHES];
- input_mt_assign_slots(dev, slot, f->mt, n);
+ input_mt_assign_slots(dev, slot, f->mt, n, 0);
for (i = 0; i < n; i++)
alps_set_slot(dev, slot[i], f->mt[i].x, f->mt[i].y);
diff --git a/drivers/input/mouse/bcm5974.c b/drivers/input/mouse/bcm5974.c
index c329cdb0b91a..b10709f04615 100644
--- a/drivers/input/mouse/bcm5974.c
+++ b/drivers/input/mouse/bcm5974.c
@@ -564,7 +564,7 @@ static int report_tp_state(struct bcm5974 *dev, int size)
dev->index[n++] = &f[i];
}
- input_mt_assign_slots(input, dev->slots, dev->pos, n);
+ input_mt_assign_slots(input, dev->slots, dev->pos, n, 0);
for (i = 0; i < n; i++)
report_finger_data(input, dev->slots[i],
diff --git a/drivers/input/mouse/cypress_ps2.c b/drivers/input/mouse/cypress_ps2.c
index 8af34ffe208b..9118a1861a45 100644
--- a/drivers/input/mouse/cypress_ps2.c
+++ b/drivers/input/mouse/cypress_ps2.c
@@ -538,7 +538,7 @@ static void cypress_process_packet(struct psmouse *psmouse, bool zero_pkt)
pos[i].y = contact->y;
}
- input_mt_assign_slots(input, slots, pos, n);
+ input_mt_assign_slots(input, slots, pos, n, 0);
for (i = 0; i < n; i++) {
contact = &report_data.contacts[i];
diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
index f89de8971bf8..a3692e3b7cab 100644
--- a/drivers/input/mouse/synaptics.c
+++ b/drivers/input/mouse/synaptics.c
@@ -809,7 +809,7 @@ static void synaptics_report_mt_data(struct psmouse *psmouse,
pos[i].y = synaptics_invert_y(hw[i]->y);
}
- input_mt_assign_slots(dev, slot, pos, nsemi);
+ input_mt_assign_slots(dev, slot, pos, nsemi, 0);
for (i = 0; i < nsemi; i++) {
input_mt_slot(dev, slot[i]);